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  1. Over-the-horizon radar - Wikipedia

    Over-the-horizon radar (OTH), sometimes called beyond the horizon radar (BTH), is a type of radar system with the ability to detect targets at very long ranges, typically hundreds to …

  2. Next Generation Over-the-Horizon Radar | Raytheon

    With more than 30 years of experience as a lead systems integrator developing and maintaining over-the-horizon radars, Raytheon brings forth the Next Generation Over-the-Horizon Radar, …

  3. OTH Shipping Carrier Tracking – Track and Trace

    Enter OTH Shipping Tracking number to track and trace your Over The Highway Freight Carrier, Courier, Sears Order, Package delivery status details online.

  4. OTHR.org-Over-The-Horizon-Radar Detection & Security – …

    What is OTHR? OTHR is a radar system with the ability to detect targets at very long ranges, typically hundreds to thousands of miles, beyond the horizon, which is the distance limit for …

  5. Air Force Plans to Build New Over-the-Horizon Radars in Oregon

    Apr 21, 2025 · Compared to other conventional radars, the OTHR enables long-range detection by bouncing radio waves off the ionosphere—starting roughly 50 miles above Earth —and …

  6. WHAT IS OTHR? Over-The-Horizon-Radar (OTHR) systems are high frequency (HF), bistatic, ionospheric backscatter radars that provide over-the-horizon detection and tracking of air and …

  7. Over-the-Horizon Radar (OTHR): Unveiling the Distant Horizons

    Over-the-Horizon Radar (OTHR) is a sophisticated technology that enables the detection and tracking of objects far beyond the conventional radar horizon. This capability is crucial for …

  8. In 1997 Papazoglou and Krolik [11] devised a technique for using matched field processing to measure the altitude of aircraft targets being tracked by an OTHR using a single coherent …

  9. Project Overview - OTHR EIS

    The Proposed Action includes acquisition of land, construction, and operation of two Homeland Defense Over-the-Horizon Radar (HLD OTHR) systems in the Northwest region of the United …

  10. Over-The-Horizon Radar - D-TA Systems

    Over-the-Horizon Radar (OTHR) is a very long range radar system that uses the ionosphere to bounce signals to detect incoming threats.